https://bugzilla.kernel.org/show_bug.cgi?id=75981 Bug ID: 75981 Summary: [Nested kvm on kvm]L2 guest reboot continuously when create a rhel6u5(64bit) as L2 guest. Product: Virtualization Version: unspecified Kernel Version: 3.15.0-rc1 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: chao.zhou@xxxxxxxxx Regression: No Environment: ------------ Host OS (ia32/ia32e/IA64):ia32e Guest OS (ia32/ia32e/IA64):ia32e Guest OS Type (Linux/Windows):Linux kvm.git Commit:198c74f43f0f5473f99967aead30ddc622804bc1 qemu.git Commit:411f491e0af173cf8f39347574941bd26fbae381 Host Kernel Version:3.15.0-rc1 Hardware:Romley_EP Bug detailed description: -------------------------- when create L1 guest with "-cpu host" , then create a 64bit rhel6u5 guest as L2 guest, the L2 guest reboot continuously. note: 1. create a 64bit RHEL6u4 as L2 guest, the guest reboot continuously. 2. when creat a 32bit rhel6u5 guest as L2 guest, the L2 guest works fine 3. this should be a kernel bug: kvm + qemu = result 198c74f4 + 411f491e = bad 0f689a33 + 411f491e = good Reproduce steps: ---------------- 1. create L1 guest: qemu-system-x86_64 -enable-kvm -m 8G -smp 4 -net nic,macaddr=00:12:41:51:14:16 -net tap,script=/etc/kvm/qemu-ifup ia32e_nested-kvm.img -cpu host,level=9 2. create L2 guest qemu-system-x86_64 -enable-kvm -m 1024 -smp 2 -net none ia32e_rhel6u4.img Current result: ---------------- 64bit rhel6u5 as L2 guest reboot continuously Expected result: ---------------- 64bit rhel6u5 as L2 guest works fine Basic root-causing log: ---------------------- -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
